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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 30, 2022 | Dec. 31, 2021 | Dec. 25, 2020 | Dec. 27, 2019
Other Details |  |  |  |
Accounts Receivable, Allowance for Credit Loss | $ 6,130,000 | $ 3,254,000 | $ 3,745,000 | $ 4,828,000
Accounts Receivable, Credit Loss Expense (Reversal) | 3,567,000 | (27,000) | 647,000 |
Accounts Receivable, Allowance for Credit Loss, Writeoff | (633,000) | (676,000) | (2,732,000) |
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) | (58,000) | 212,000 | 1,002,000 |
Write-downs of long-lived assets | 0 |  |  |
Other Asset Impairment Charges |  | 35,000,000 |  |
Amortization of intangible assets | 18,900,000 | 17,900,000 | 16,700,000 |
Cash surrender value of life insurance change | 4,000,000 | 3,300,000 | $ 2,200,000 |
Self insured reserves | 9,300,000 | 9,300,000 |  |
Derivative, Notional Amount | $ 48,000,000 |  |  |
Minimum |  |  |  |
Other Details |  |  |  |
Capitalized software estimated useful life | 2 years |  |  |
Minimum | Buildings and improvements |  |  |  |
Other Details |  |  |  |
Property, plant and equipment, useful life | 10 years |  |  |
Minimum | Leasehold improvements |  |  |  |
Other Details |  |  |  |
Property, plant and equipment, useful life | 5 years |  |  |
Minimum | Manufacturing equipment |  |  |  |
Other Details |  |  |  |
Property, plant and equipment, useful life | 5 years |  |  |
Minimum | Office, warehouse and automotive equipment |  |  |  |
Other Details |  |  |  |
Property, plant and equipment, useful life | 3 years |  |  |
Maximum |  |  |  |
Other Details |  |  |  |
Capitalized software estimated useful life | 5 years |  |  |
Maximum | Buildings and improvements |  |  |  |
Other Details |  |  |  |
Property, plant and equipment, useful life | 30 years |  |  |
Maximum | Leasehold improvements |  |  |  |
Other Details |  |  |  |
Property, plant and equipment, useful life | 10 years |  |  |
Maximum | Manufacturing equipment |  |  |  |
Other Details |  |  |  |
Property, plant and equipment, useful life | 10 years |  |  |
Maximum | Office, warehouse and automotive equipment |  |  |  |
Other Details |  |  |  |
Property, plant and equipment, useful life | 10 years |  |  |
Trade Accounts Receivable |  |  |  |
Other Details |  |  |  |
Accounts receivable | $ 334,000,000 | 315,000,000 |  |
Other Receivables |  |  |  |
Other Details |  |  |  |
Accounts receivable | $ 12,000,000 | $ 10,000,000 |  |

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